US10879599B2 - Vehicle, control method thereof and antenna apparatus for vehicle - Google Patents
Vehicle, control method thereof and antenna apparatus for vehicle Download PDFInfo
- Publication number
- US10879599B2 US10879599B2 US16/206,632 US201816206632A US10879599B2 US 10879599 B2 US10879599 B2 US 10879599B2 US 201816206632 A US201816206632 A US 201816206632A US 10879599 B2 US10879599 B2 US 10879599B2
- Authority
- US
- United States
- Prior art keywords
- signals
- signal
- frequency
- controller
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 36
- 230000006870 function Effects 0.000 claims description 47
- 230000005684 electric field Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
Definitions
- Forms of the present disclosure relate to a vehicle, a control method thereof, and a receiver for a vehicle, and more particularly, to a vehicle, a control method thereof, and an antenna apparatus for a vehicle, which are capable of changing a reception frequency of a signal.
- a vehicle refers to a moving device or a transport device which travels on a road or a track by using fossil fuel, electricity, or the like as a power source.
- the vehicle serves as a living space to provide relaxation to a driver beyond merely being the moving device or the transport device.
- various electronic devices for vehicles are installed in the vehicle to provide comfort and relaxation to the driver.
- the vehicle is provided with an antenna configured to receive radio waves to receive radio broadcasts or the like.
- the antenna for the vehicle has a high resonance frequency gain, but a gain of the antenna decreases as a frequency deviates from the resonance frequency.
- the antenna is provided with an amplifier configured to amplify strengths of signals in both side frequency bands with respect to the resonance frequency.
- a vehicle includes: an antenna having different gain characteristics in different operating frequency bands; and a controller configured to correct reception strengths of a plurality of signals having different frequencies for carrying identical content, change the gain characteristic of the antenna based on the corrected reception strengths of the signals, and obtain content from a signal having a maximum corrected reception strength among the signals having different frequencies.
- the controller may correct the reception strengths of the signals by using a plurality of characteristic functions indicating the different gain characteristics.
- the controller may include a first characteristic function of a first operating frequency band and a second characteristic function of a second operating frequency band, and obtain the content from a signal having a first frequency based on whether an output value of the first characteristic function for the first frequency is greater than an output value of the second characteristic function for a second frequency.
- the controller may correct the reception strengths of the signals by using a plurality of characteristic tables indicating the different gain characteristics.
- the controller may include a first characteristic table of a first operating frequency band and a second characteristic table of a second operating frequency band, and obtain the content from a signal having a first frequency based on whether an output value of the first characteristic table for the first frequency is greater than an output value of the second characteristic table for a second frequency.
- the antenna may include a coil configured to receive a wireless signal and a switch configured to adjust an operating frequency band of the coil, and the controller may change the operating frequency band of the coil by controlling the switch based on the corrected reception strengths of the signals.
- the switch may be connectable to the coil at a plurality of connection points, and the operating frequency band of the coil may be adjusted as the connection point of the switch is changed based on the corrected reception strengths of the signals.
- the controller may determine the operating frequency band of the coil based on a frequency selected by a user.
- the vehicle may further include an amplifying unit configured to amplify a wireless signal received from the antenna, and the controller may control an impedance fluctuation range of the amplifying unit based on the corrected reception strengths of the signals.
- the amplifying unit may include a switch, a plurality of inductors, and an amplifying circuit, and the controller may connect the switch to one of the inductors based on the corrected reception strengths of the signals.
- a method of controlling a vehicle including an antenna having different gain characteristics in different operating frequency bands includes: correcting reception strengths of a plurality of signals having different frequencies for carrying identical content; changing the gain characteristic of the antenna based on the corrected reception strengths of the signals; and obtaining content from a signal having a maximum corrected reception strength among the signals having different frequencies.
- the correcting of the reception strengths of the signals may include correcting the reception strengths of the signals by using a plurality of characteristic functions indicating the different gain characteristics.
- the obtaining of the content from the signal having the maximum corrected reception strength may include obtaining the content from a signal having a first frequency based on whether an output value of a first characteristic function for the first frequency is greater than an output value of a second characteristic function for a second frequency.
- the correcting of the reception strengths of the signals may include correcting the reception strengths of the signals by using a plurality of characteristic tables indicating the different gain characteristics.
- the obtaining of the content from the signal having the maximum corrected reception strength may include obtaining the content from a signal having a first frequency based on whether an output value of a first characteristic table for the first frequency is greater than an output value of a second characteristic table for a second frequency.
- an antenna apparatus includes: a coil configured to receive a wireless signal; a switch configured to adjust an operating frequency band of the coil; and a controller configured to correct reception strengths of a plurality of signals having different frequencies for carrying identical content, change the operating frequency band of the coil by controlling the switch based on the corrected reception strengths of the signals, and obtain content from a signal having a maximum corrected reception strength among the signals having different frequencies.
- the controller may correct the reception strengths of the signals by using a plurality of characteristic functions indicating gain characteristics of the operating frequency band.
- the controller may include a first characteristic function of a first operating frequency band and a second characteristic function of a second operating frequency band, and obtain the content from a signal having a first frequency based on whether an output value of the first characteristic function for the first frequency is greater than an output value of the second characteristic function for a second frequency.
- the controller may correct the reception strengths of the signals by using a plurality of characteristic tables indicating gain characteristics of the operating frequency band.
- the controller may include a first characteristic table of a first operating frequency band and a second characteristic table of a second operating frequency band, and obtain the content from a signal having a first frequency based on whether an output value of the first characteristic table for the first frequency is greater than an output value of the second characteristic table for a second frequency.
- FIG. 1 is a view illustrating a vehicle in one form of the present disclosure
- FIG. 2 is a view illustrating a structure of an antenna apparatus in one form of the present disclosure
- FIG. 3 is a view illustrating a configuration of the antenna apparatus in one form of the present disclosure
- FIG. 4 is a view illustrating a detailed configuration of the antenna apparatus and an operating frequency according to an available range of a coil in one form of the present disclosure
- FIGS. 5 and 6 are views illustrating a frequency to a signal strength when using the antenna apparatus in one form of the present disclosure
- FIG. 7 is a view illustrating an effect obtained in a strong electric field when using the antenna apparatus in one form of the present disclosure
- FIG. 8 is a view illustrating a configuration of an antenna apparatus in another form of the present disclosure.
- FIG. 9 is a view illustrating a detailed circuit of an amplifying unit of the antenna apparatus in another form of the present disclosure.
- FIGS. 10A, 10B, 10C, 10D, and 10E are views illustrating a complex plane Smith chart for an impedance of the antenna apparatus in another form of the present disclosure
- FIG. 11 is a view illustrating a configuration of an antenna apparatus in another form of the present disclosure.
- FIG. 12 is a view illustrating a frequency gain to explain an operation of the antenna apparatus in another form of the present disclosure.
- FIGS. 13 and 14 are views illustrating gain correction values of the antenna apparatus in another form of the present disclosure.
- FIG. 15 is a view illustrating the operation of the antenna apparatus in another form of the present disclosure.
- FIG. 1 is a view illustrating a vehicle in one form of the present disclosure.
- FIG. 2 is a view illustrating a structure of an antenna apparatus in one form of the present disclosure.
- a vehicle 1 includes a body configured to form an exterior of the vehicle 1 and accommodate a driver and/or a luggage, a chassis including components of the vehicle 1 other than the body, and electrical components configured to protect the driver or provide convenience to the driver.
- the body may form an interior space accommodated for the driver, an engine room configured to accommodate an engine, and a trunk room configured to accommodate a cargo.
- the chassis may include devices configured to generate a power to allow the vehicle 1 to travel according to control of the driver, and drive/brake/steer the vehicle 1 by using the power.
- the electrical components may control the vehicle 1 , and provide safety and convenience for the driver and a passenger.
- a roof panel of the vehicle 1 is provided with an antenna apparatus 100 configured to receive wireless signals such as a radio signal, a broadcast signal, and a satellite signal, and transmit and receive signals to and from other vehicles, servers, and base stations.
- wireless signals such as a radio signal, a broadcast signal, and a satellite signal
- the antenna apparatus 100 includes a housing 101 including a bottom member 101 a mounted on the roof panel of the vehicle 1 and a cover member 101 b coupled to the bottom member 101 a to cover internal components.
- the bottom member 101 a is formed of a material including a synthetic resin, and attached to the body to prevent foreign substances from entering between the body and the cover member 101 b and mitigate an impact transmitted from the body.
- the bottom member 101 a is provided at an upper rear portion of the vehicle to obtain less apprehension about interference with peripheral components and achieve a high reception rate of the wireless signal.
- the bottom member 101 a has a sectional shape gradually widened toward a rear to reduce wind resistance and noise generated when the body moves.
- the housing 101 may be provided in a shark fin type.
- the antenna apparatus 100 includes a base member 102 disposed on the bottom member 101 a , and a reception module 110 disposed on the base member 102 .
- the base member 102 may be coupled to the bottom member 101 a in a bonding or bolting scheme, and may be coupled to the reception module 110 in a bolting scheme.
- the base member 102 provides a space for mounting the reception module 110 and antennas 120 .
- the reception module 110 may be provided as a printed circuit board (PCB) having wiring formed by etching copper or the like on a substrate.
- PCB printed circuit board
- the reception module 110 may include a hole through which a wire passes.
- the reception module 110 may include a signal processing circuit configured to perform signal processing by amplifying or filtering a signal received by the antenna 120 .
- the reception module 110 transmits a signal to an electronic control unit (ECU) or a terminal mounted inside the body.
- ECU electronice control unit
- the reception module 110 extracts and optimizes a signal of a predetermined frequency band, for example, a broadcast signal such as a frequency modulation (FM) signal, a amplitude modulation (AM) signal, a digital audio broadcasting (DAB) signal, or a digital multimedia broadcasting signal.
- a broadcast signal such as a frequency modulation (FM) signal, a amplitude modulation (AM) signal, a digital audio broadcasting (DAB) signal, or a digital multimedia broadcasting signal.
- the reception module 110 may be implemented as a single integrated reception module by mounting components, such as a band pass filter (BPF), a switch, a tuner, a buffer, and a digital signal processor (DSP), on a circuit board.
- BPF band pass filter
- DSP digital signal processor
- One or more antennas 120 may be provided and may be seated in the reception module 110 .
- the antenna 120 refers to an antenna configured to receive a signal in one frequency band as a signal in a fundamental frequency band.
- the one frequency band may be, for example, a frequency band of various broadcast signals, such as an FM band, an AM band, a DAB band, or a DMB band.
- the antenna 120 is mounted on the reception module 110 to transmit the received signal to the reception module 110 .
- a coil antenna may be used as the antenna 120 , and various other antennas such as a chip antenna and a microstrip patch antenna may be used as the antenna 120 .
- FIG. 3 is a view illustrating a configuration of the antenna apparatus in one form of the present disclosure.
- the antenna apparatus 100 includes a reception module 110 and an antenna 120 .
- the reception module 110 may include an amplifying unit 111 , a tuner 112 , and a controller 113 . Although not shown, the reception module 110 may further include a filter configured to extract only a signal of a predetermined frequency band among signals received from the antenna 120 .
- the amplifying unit 111 is a component for amplifying the signal received from the antenna 120 , and may include an amplifier configured to amplify the signal of the predetermined frequency band.
- the tuner 112 tunes to a frequency selected by a user to extract a signal of the selected frequency.
- the tuner 112 may provide the signal of the frequency selected by the user to an audio system of the vehicle 1 as an acoustic signal.
- the tuner 112 may tune to the selected frequency through the audio system of the vehicle 1 .
- the signal extracted from the tuner 112 may be transmitted to the audio system of the vehicle 1 , and the audio system may transmit the transmitted signal as a sound.
- the controller 113 controls a frequency band that is receivable by the antenna 120 or controls an impedance fluctuation range of the amplifying unit 111 .
- the controller 113 may control the frequency band that is receivable by the antenna 120 (hereinafter referred to as “operating frequency band”) by adjusting an operation range of a coil included in the antenna 120 . When the coil becomes longer, the operating frequency band of the antenna 120 becomes lower.
- the controller 113 may change the impedance fluctuation range of the amplifying unit 111 by changing an element value of the amplifying unit 111 .
- the controller 113 may select the element value of the amplifying unit 111 such that impedance matching can be performed with respect to the antenna 120 .
- the controller 113 may adjust the operation range of the coil included in the antenna 120 , and change the element value of the amplifying unit 111 as described above.
- a control process of the controller 113 of the antenna apparatus 100 will be described in detail below.
- the controller 113 may generate various control signals for controlling components in the antenna apparatus 100 .
- the controller 113 may be implemented as a module separate from the reception module 110 , or as a module integrated with the electronic control unit (ECU) of the vehicle 1 .
- ECU electronice control unit
- the controller 113 may be implemented as a memory (not shown) configured to store an algorithm for controlling operations of the components in the antenna apparatus 100 , or data of a program for reproducing the algorithm, and a processor (not shown) configured to perform operations described above by using the data stored in the memory.
- the memory and the processor may be implemented as separate chips.
- the memory and the processor may be implemented as a single chip.
- the controller 113 may transmit a signal to an electronic control unit (ECU), a terminal, or the like.
- ECU electronice control unit
- CAN controller area network
- FIG. 4 is a view illustrating a detailed configuration of the antenna apparatus and an operating frequency according to an available range of a coil in one form of the present disclosure.
- FIGS. 5 and 6 are views illustrating a frequency to a signal strength when using the antenna apparatus in one form of the present disclosure.
- FIG. 7 is a view illustrating an effect obtained in a strong electric field when using the antenna apparatus in one form of the present disclosure.
- the antenna 120 in one form of the present disclosure may include a coil 121 and a switching unit 122 .
- the coil 121 is operated by a current received through the switching unit 122 .
- a length of the coil 121 to be operated becomes longer, that is, the length of the coil 121 through which the current flows becomes longer, the frequency band that is receivable by the antenna 120 becomes lower.
- the switching unit 122 may include a switch, and adjust the length of the coil 121 to be operated (that is, the operating range of the coil 121 ) by changing a connection point between the switching unit 122 and the coil 121 according to the control signal of the controller 113 .
- the operating range of the coil 121 may be changed.
- the operating frequency band may be in the range of 88 MHz or higher and lower than 93 MHz when the controller 113 places the switch of the switching unit 122 at a point SW 1
- the operating frequency band may be in the range of 93 MHz or higher and lower than 98 MHz as the operating range of the coil 121 is reduced when the controller 113 places the switch at a point SW 2
- the operating frequency band may be in the range of 98 MHz or higher and lower than 103 MHz as the operating range of the coil 121 is further reduced when the controller 113 places the switch at a point SW 3
- the operating frequency band may be in the range of 103 MHz or higher and lower than 108 MHz as the operating range of the coil 121 is reduced even further when the controller 113 places the switch at a point SW 4 .
- the controller 113 may improve a ratio of a signal S to noise N ratio in comparison with a conventional antenna apparatus (upper graphs) by flexibly adjusting the operating frequency of the antenna 120 as described above.
- the operating frequency band may be a certain frequency band of 88 MHz or higher and lower than 93 MHz as shown in FIG. 5A , and a higher ratio of the signal S to the noise N than a ratio of a signal S to noise N of the conventional antenna apparatus 100 can be obtained at the frequency of 90 MHz selected by the user.
- the operating frequency band may be a certain frequency band of 93 MHz or higher and lower than 98 MHz as shown in FIG. 5B , and a higher ratio of the signal S to the noise N than a ratio of the signal S to the noise N of the conventional antenna apparatus 100 can be obtained at the frequency of 97 MHz selected by the user.
- the operating frequency band may be a certain frequency band of 98 MHz or higher and lower than 103 MHz as shown in FIG. 5C , and a higher ratio of the signal S to the noise N than a ratio of the signal S to the noise N of the conventional antenna apparatus 100 can be obtained at the frequency of 100 MHz selected by the user.
- the operating frequency band may be a certain frequency band of 103 MHz or higher and lower than 108 MHz as shown in FIG. 5D , and a higher ratio of the signal S to the noise N than a ratio of the signal S to the noise N of the conventional antenna apparatus 100 can be obtained at the frequency of 105 MHz selected by the user.
- a higher ratio of the signal S to the noise N than a ratio of a signal S to noise N of a conventional configuration can be obtained at the frequency of 90 MHz, 97 MHz, 100 MHz, or 105 MHz selected by the user.
- the frequency band is described as being divided into four operating frequency bands by the controller 113 and the switching unit 122 , but a number of operating frequency bands is not limited thereto.
- an intermodulation signal Eb due to strong electric field signals E 1 a and E 2 a may be generated, and signal interference may be increased by the intermodulation signal Eb.
- the antenna 120 is operated only in some frequency bands, the intermodulation signal Eb can be reduced, so that reception performance can be improved.
- FIG. 8 is a view illustrating a configuration of an antenna apparatus in another form of the present disclosure.
- FIG. 9 is a view illustrating a detailed circuit of an amplifying unit of the antenna apparatus in another form of the present disclosure.
- FIGS. 10A, 10B, 10C, 10D, and 10E are views illustrating a complex plane Smith chart for an impedance of the antenna apparatus in another form of the present disclosure.
- the antenna apparatus 100 may perform impedance matching with respect to the antenna 120 by adjusting the impedance fluctuation range of the amplifying unit 111 .
- the amplifying unit 111 of the antenna apparatus 100 includes a selector 111 a and a matcher 111 b to adjust the impedance fluctuation range of an internal amplifying circuit 111 c.
- the selector 111 a may include a switch, and may control the impedance fluctuation range of the amplifying circuit 111 c by selecting a connection point between the selector 111 a and the matcher 111 b according to the control signal of the controller 113 .
- the matcher 111 b may include a plurality of inductors having different capacitances and connected in parallel with the amplifying circuit 111 c , and adjust the impedance fluctuation range of the amplifying circuit 111 c by selecting one of the inductors by the selector 111 a.
- the amplifying circuit 111 c may be a typical circuit configured to amplify a signal strength, which is a well-known technique, so the detailed description thereof will be omitted.
- the controller 113 may control the selector 111 a such that the amplifying circuit 111 c is connected to one of the inductors of the matcher 111 b , so that one inductor can be selected to control the impedance fluctuation range of the amplifying circuit 111 c.
- the controller 113 may change the impedance fluctuation range of the amplifying circuit 111 c based on the frequency selected by the user.
- an impedance AI of the antenna 120 is R+jX at a frequency of 500 kHz or higher and lower than 1700 kHz, which is an entire frequency band in which the antenna 120 is operable
- an ideal impedance of the amplifying unit 111 for performing the impedance matching (hereinafter referred to as “impedance matching area OP”) is a conjugate complex value R ⁇ jX.
- the impedance fluctuation range of the amplifying unit 111 at the frequency of 500 kHz or higher and lower than 1700 kHz is shifted away from the impedance AI of the antenna 120 on an upper trace of FIG. 10A .
- the frequency band corresponding to the impedance matching area OP is increased (in FIG.
- the frequency band corresponding to the impedance matching area OP is increased to 500 kHz to 800 kHz when selecting an inductor of 4 mH, 800 kHz to 1100 kHz when selecting an inductor of 3 mH, and 1100 kHz to 1400 kHz when selecting an inductor of 2 mH).
- the controller 113 of the antenna apparatus 100 may adjust the impedance fluctuation range of the amplifying unit 111 such that the frequency selected by the user is present in the impedance matching area OP.
- the controller 113 may adjust the impedance fluctuation range of the amplifying unit 111 such that a region corresponding to the frequency selected by the user within the impedance fluctuation range of the amplifying unit 111 becomes the impedance matching area OP.
- the controller 113 may change the impedance fluctuation range of the amplifying unit 111 at the frequency of 500 kHz or higher and lower than 1700 kHz (i.e., the entire frequency band that is receivable by the antenna 120 ) as shown in an upper portion of FIG. 10B , so that an impedance of the amplifying unit 111 can be present in the impedance matching area OP at a frequency of 500 kHz or higher and lower than 800 kHz.
- the controller 113 may change the impedance fluctuation range of the amplifying unit 111 at the frequency of 500 kHz or higher and lower than 1700 kHz as shown in an upper portion of FIG. 10C , so that the impedance of the amplifying unit 111 can be present in the impedance matching area OP at a frequency of 800 kHz or higher and lower than 1100 kHz.
- the controller 113 may change the impedance fluctuation range of the amplifying unit 111 at the frequency of 500 kHz or higher and lower than 1700 kHz as shown in an upper portion of FIG. 10D , so that the impedance of the amplifying unit 111 can be present in the impedance matching area OP at a frequency of 1100 kHz or higher and lower than 1400 kHz.
- the controller 113 may change the impedance fluctuation range of the amplifying unit 111 at the frequency of 500 kHz or higher and lower than 1700 kHz as shown in an upper portion of FIG. 10E , so that the impedance of the amplifying unit 111 can be present in the impedance matching area OP at a frequency of 1400 kHz or higher and lower than 1700 kHz.
- the entire frequency band that is receivable by the antenna 120 is in the range of 500 kHz or higher and lower than 1700 kHz is described for illustrative purposes, but the entire frequency band that is receivable by the antenna 120 is not limited thereto.
- the frequency selected by the user is divided into the frequency band of 500 kHz or higher and lower than 800 kHz, the frequency band of 800 kHz or higher and lower than 1100 kHz, the frequency band of and 1100 kHz or higher and lower than 1400 kHz by the controller 113 is described for illustrative purposes, but the controller 113 may divide the frequency selected by the user into various sections other than the above sections.
- the antenna apparatus 100 includes the antenna 120 including the coil 121 and the switching unit 122 of the antenna apparatus 100 in one form of the present disclosure, and may include the amplifying unit 111 including the selector 111 a , the matcher 111 b , and the amplifying circuit 111 c .
- the amplifying unit 111 , the tuner 112 , the controller 113 , and the antenna 120 are described above, so the detailed description thereof will be omitted.
- FIG. 11 is a view illustrating a configuration of an antenna apparatus in another form of the present disclosure.
- FIG. 12 is a view illustrating a frequency gain to explain an operation of the antenna apparatus in another form of the present disclosure.
- FIGS. 13 and 14 are views illustrating gain correction values of the antenna apparatus in another form of the present disclosure.
- an antenna apparatus 100 includes a reception module 110 and an antenna 120 .
- the antenna 120 may include a coil 121 and a switching unit 122
- the reception module 110 may include an amplifying unit 111 , a tuner 112 , and a controller 113 .
- Operations of the coil 121 , the switching unit 122 , the amplifying unit 111 , and the tuner 112 may be identical to the operations of the coil, the switching unit, the amplifying unit, and the tuner shown in FIGS. 3 and 4 .
- the controller 113 controls the frequency band that is receivable by the antenna 120 , or controls the impedance fluctuation range of the amplifying unit 111 .
- the controller 113 may control the frequency band that is receivable by the antenna 120 (hereinafter referred to as “operating frequency band”) by adjusting an operation range of a coil included in the antenna 120 , and change the impedance fluctuation range of the amplifying unit 111 by changing an element value of the amplifying unit 111 .
- the controller 113 may detect a change in an area (or the administrative area) where the vehicle 1 is located, or detect a change in a frequency of a broadcast signal currently being listened to.
- the controller 113 may adjust the operation range of the coil in response to the change of the area (or the administrative area) or the frequency change of the broadcast signal. Accordingly, the controller 113 may control the frequency band that is receivable by the antenna 120 (hereinafter referred to as “operating frequency band”).
- the controller 113 may change the element value of the amplifying unit 111 in response to the change of the area (or the administrative area) or the frequency change of the broadcast signal. Accordingly, the controller 113 may change the impedance fluctuation range of the amplifying unit 111 .
- content of a radio broadcast or digital media may be carried by a signal having a first frequency f 1 in an area A, and the content of the radio broadcast or the digital media may be carried by a signal having a second frequency f 2 in an area B.
- the antenna apparatus 100 may receive the signal having the first frequency f 1 while the vehicle 1 is traveling in the area A.
- the signal may be a radio broadcast signal, a digital media signal, or the like
- the first frequency f 1 may indicate a frequency at which the content of the radio broadcast or the digital media is carried in the area A.
- the first frequency f 1 may be in an operating frequency band of 93 MHz or higher and lower than 98 MHz, and may be included in an operating range of the antenna apparatus 100 when the switch is located at the point SW 2 .
- the second frequency f 2 may be in an operating frequency band of 98 MHz or higher and lower than 103 MHz, and may be included in the operating range of the antenna apparatus 100 when the switch is located at the point SW 3 .
- the signal having the first frequency f 1 and the signal having the second frequency f 2 may transmit identical broadcast content.
- a strength of the signal having the first frequency f 1 is greater than a strength of the signal having the second frequency f 2 while the vehicle 1 is traveling in the area A. Therefore, the controller 113 may place the switch at the point SW 2 so that the antenna apparatus 100 can have a maximum gain for the signal having the first frequency f 1 .
- a reception strength of the signal having the first frequency f 1 is significantly greater than a reception strength of the signal having the second frequency f 2 while the vehicle 1 is traveling in the area A.
- the strength of the signal having the first frequency f 1 is decreased, whereas the strength of the signal having the second frequency f 2 increased. Accordingly, as shown in FIG. 12B , the reception strength of the signal which has the first frequency f 1 and is received by the antenna apparatus 100 may be decreased, and the reception strength of the signal having the second frequency f 2 may be increased.
- the strength of the signal having the first frequency f 1 may become smaller than the strength of the signal having the second frequency f 2 while the vehicle 1 is traveling in the area B.
- the switch is located at the point SW 2 , that is, the antenna apparatus 100 is optimized to receive signals at 93 MHz or higher and lower than 98 MHz, as shown in FIG. 12C , the reception strength of the signal which has the first frequency f 1 and is received by the antenna apparatus 100 may be similar to or greater than the reception strength of the signal having the second frequency f 2 .
- the controller 113 may simply compare the reception strength of the signal having the first frequency f 1 with the reception strength of the signal having the second frequency f 2 , and the controller 113 may place the switch at the point SW 2 according to a comparison result. As a result, a reception rate of the signal in the area B may be reduced in comparison with a reception rate of the signal in the area A.
- the controller 113 may estimate the reception strength of the signal having the second frequency f 2 , and change a frequency at which the broadcast signal is received based on the estimated reception strength of the signal.
- the reception strength of the signal having the first frequency f 1 is significantly greater than the reception strength of the signal having the second frequency f 2 while the vehicle 1 is traveling in the area A.
- the reception strength of the signal which has the first frequency f 1 and is received by the antenna apparatus 100 may be decreased, whereas the reception strength of the signal having the second frequency f 2 may be increased.
- the controller 113 may determine a frequency change with regard to a maximum gain of signals having respective frequencies. For example, the controller 113 may correct the reception strength of the signal having the first frequency f 1 of 93 MHz or higher and lower than 98 MHz into a reception strength when the switch is located at the point SW 2 , and correct the reception strength of the signal having the second frequency f 2 of 98 MHz or higher and lower than 103 MHz into a reception strength when the switch is located at the point SW 2 .
- the controller 113 may compare the corrected reception strength of the signal having the first frequency f 1 with the corrected reception strength of the signal having the second frequency f 2 , and determine a frequency change according to a comparison result. As shown in FIG. 12E , the corrected reception strength of the signal having the first frequency f 1 may still be greater than the corrected reception strength of the signal having the second frequency f 2 , and the controller 113 may not change a reception frequency.
- the strength of the signal having the first frequency f 1 may become smaller than the strength of the signal having the second frequency f 2 while the vehicle 1 is traveling in the area B, and the controller 113 may determine the frequency change with regard to the maximum gain of the signals having the respective frequencies. For example, as shown in FIG. 12F , the corrected reception strength of the signal having the first frequency f 1 may be smaller than the corrected reception strength of the signal having the second frequency f 2 , and the controller 113 may change the reception frequency from the first frequency f 1 to the second frequency f 2 .
- the vehicle 1 may receive the signal having the first frequency f 1 , which is strong in the strength of the signal in the area A, and receive the signal having the second frequency f 2 , which is strong in the strength of the signal in the area B.
- the controller 113 may use a mathematical expression that reflects antenna characteristics or a lookup table that reflects the antenna characteristics in order to correct the strengths of the signals having the respective frequencies into a strength of the maximum gain.
- the controller 113 may correct the strengths of the signals having the respective frequencies to the strength of the maximum gain by using a function similar to a gain curve of an antenna according to a position of the switch.
- the controller 113 may store a first function F 1 indicating a gain curve of the antenna when the switch is located at the point SW 1 , a second function F 2 indicating a gain curve of the antenna when the switch is located at the point SW 2 , a third function F 3 indicating a gain curve of the antenna when the switch is located at the point SW 3 , and a fourth function F 4 indicating a gain curve of the antenna when the switch is located at the point SW 4 .
- the first function F 1 may represent a gain of the antenna for a signal having a frequency of 88 MHz or higher and lower than 93 MHz
- the second function F 2 may represent a gain of the antenna for a signal having a frequency of 93 MHz or higher and lower than 98 MHz
- the third function F 3 may represent a gain of the antenna for a signal having a frequency of 98 MHz or higher and lower than 103 MHz
- the fourth function F 4 may represent a gain of the antenna for a signal having a frequency of 103 MHz or higher and lower than 108 MHz.
- the controller 113 may correct the reception strength of the signal having the second frequency f 2 of 98 MHz or higher and lower than 103 MHz by using the second function F 2 and the third function F 3 .
- the controller 113 may correct the reception strength of the signal having the second frequency f 2 based on a difference between an output of the second function F 2 when the second frequency f 2 is input and an output of the third function F 3 when the second frequency f 2 is input.
- the controller 113 may compare the reception strength of the signal having the first frequency f 1 with the corrected reception strength of the signal having the second frequency f 2 , and determine the frequency change based on the comparison result.
- the controller 113 may correct the strength of the signal having the first frequency f 1 into the strength of the maximum gain based on an output of the second function F 2 when the first frequency f 1 is input, and correct the strength of the signal having the second frequency f 2 into the strength of the maximum gain based on the output of the third function F 3 when the second frequency f 2 is input.
- the controller 113 may compare a maximum strength of the signal having the first frequency f 1 with a maximum strength of the signal having the second frequency f 2 , and determine the frequency change based on a comparison result.
- the controller 113 may store a first table including gain curve values of the antenna when the switch is located at the point SW 1 , a second table including gain curve values of the antenna when the switch is located at the point SW 2 , a third table including gain curve values of the antenna when the switch is located at the point SW 3 , and a fourth table including gain curve values of the antenna when the switch is located at the point SW 4 .
- the first table may include gain values of the antenna for signals having a frequency of 88 MHz or higher and lower than 93 MHz
- the second table may include gain values of the antenna for signals having a frequency of 93 MHz or higher and lower than 98 MHz
- the third table may include gain values of the antenna for signals having a frequency of 98 MHz or higher and lower than 103 MHz
- the fourth table may include gain values of the antenna for signals having a frequency of 103 MHz or higher and lower than 108 MHz.
- the controller 113 may correct the reception strength of the signal having the second frequency f 2 of 98 MHz or higher and lower than 103 MHz by using the second table and the third table.
- the controller 113 may correct the strength of the signal having the first frequency f 1 into the strength of the maximum gain based on an output of the second table corresponding to the first frequency f 1 , and correct the strength of the signal having the second frequency f 2 into the strength of the maximum gain based on an output of the third table corresponding to the second frequency f 2 .
- the controller 113 may compare the maximum strength of the signal having the first frequency f 1 with the maximum strength of the signal having the second frequency f 2 , and determine the frequency change based on the comparison result.
- the controller 113 may correct the reception strength of the signal having the second frequency f 2 based on a difference between an output of the second table corresponding to the second frequency f 2 and the output of the third table corresponding to the second frequency f 2 .
- the controller 113 may compare the reception strength of the signal having the first frequency f 1 with the corrected reception strength of the signal having the second frequency f 2 , and determine the frequency change based on the comparison result.
- FIG. 15 is a view illustrating the operation of the antenna apparatus in another form of the present disclosure.
- the vehicle 1 receives a broadcast signal ( 1010 ).
- the vehicle 1 may receive signals including broadcast content through the antenna apparatus 100 .
- the vehicle 1 may receive the signal having the first frequency f 1 and the signal having the second frequency f 2 , and output the broadcast content from the signal having the first frequency f 1 .
- the vehicle 1 corrects a reception strength of the broadcast signal having different frequencies ( 1020 ).
- the vehicle 1 may correct the reception strength of the frequencies of the broadcast signal by using the functions F 1 , F 2 , F 3 , and F 4 indicating the gain curves of the antenna apparatus 100 , or the lookup tables T 1 , T 2 , T 3 , and T 4 .
- the vehicle 1 may correct the signal having the first frequency f 1 and the signal having the second frequency f 2 by using the functions F 1 , F 2 , F 3 , and F 4 , or the lookup tables T 1 , T 2 , T 3 , and T 4 .
- the vehicle 1 may correct the reception strength of the signal having the second frequency f 2 based on the difference between the output of the second function F 2 when the second frequency f 2 is input and the output of the third function F 3 when the second frequency f 2 is input. In addition, the vehicle 1 may correct the strength of the signal having the first frequency f 1 into the strength of the maximum gain based on the output of the second function F 2 when the first frequency f 1 is input, and correct the strength of the signal having the second frequency f 2 into the strength of the maximum gain based on the output of the third function F 3 when the second frequency f 2 is input.
- the vehicle 1 may correct the strength of the signal having the first frequency f 1 into the strength of the maximum gain based on the output of the second table corresponding to the first frequency f 1 , and correct the strength of the signal having the second frequency f 2 into the strength of the maximum gain based on the output of the third table corresponding to the second frequency f 2 .
- the vehicle 1 may compare the maximum strength of the signal having the first frequency f 1 with the maximum strength of the signal having the second frequency f 2 , and determine the frequency change based on the comparison result.
- the vehicle 1 determines a reception frequency based on a result of comparison performed on corrected reception strengths of the broadcast signal having the different frequencies ( 1030 ).
- the vehicle 1 may compare the corrected reception strengths of the frequencies of the broadcast signal with each other, and determine the reception frequency for receiving the broadcast content based on the comparison result.
- the vehicle 1 may compare the corrected reception strength of the signal having the first frequency f 1 with the corrected reception strength of the signal having the second frequency f 2 , and extract the broadcast content from a signal having a stronger corrected strength between the signal having the first frequency f 1 and the signal having the second frequency f 2 based on the comparison result.
- the broadcast content may be carried in the area A through the first frequency f 1
- identical broadcast content may be carried in the area B through the second frequency f 2
- the vehicle 1 may place the switch at the point SW 2 in the area A to receive the signal having the first frequency f 1
- the vehicle 1 may correct reception strengths of a plurality of signals having different frequencies for carrying identical content. In addition, the vehicle 1 may obtain the content from a signal having a maximum reception strength based on corrected reception strengths of the signals.
- the vehicle 1 may automatically change the reception frequency of the signal and change frequency characteristics of the antenna apparatus 100 as an area in which the vehicle 1 is traveling is changed.
- At least one component may be added or deleted corresponding to performance of the components of the antenna apparatus 100 .
- a mutual position of the components can be changed corresponding to performance or a structure of a system.
- some components of the antenna apparatus 100 may be software components and/or hardware components such as a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC).
- FPGA field programmable gate array
- ASIC application specific integrated circuit
- a vehicle, a control method thereof, and an antenna apparatus for a vehicle which have high signal-to-noise ratio characteristics regardless of a frequency band, can be provided.
- a vehicle, a control method thereof, and an antenna apparatus for a vehicle which are capable of implementing optimum impedance matching for an antenna according to a frequency, can be provided.
- a vehicle, a control method thereof, and an antenna apparatus for a vehicle which are capable of automatically changing a frequency according to an area, can be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2018-0112063 | 2018-09-19 | ||
KR1020180112063A KR102553982B1 (en) | 2018-09-19 | 2018-09-19 | Vehicle, control method thereof and antenna for vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
US20200091593A1 US20200091593A1 (en) | 2020-03-19 |
US10879599B2 true US10879599B2 (en) | 2020-12-29 |
Family
ID=64661153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/206,632 Active 2039-01-30 US10879599B2 (en) | 2018-09-19 | 2018-11-30 | Vehicle, control method thereof and antenna apparatus for vehicle |
Country Status (3)
Country | Link |
---|---|
US (1) | US10879599B2 (en) |
EP (1) | EP3627712A1 (en) |
KR (1) | KR102553982B1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5857145A (en) | 1996-08-02 | 1999-01-05 | Nec Corporation | Radio pager |
US6317027B1 (en) * | 1999-01-12 | 2001-11-13 | Randy Watkins | Auto-tunning scanning proximity reader |
US20060111056A1 (en) | 2004-11-19 | 2006-05-25 | Santanu Dutta | Electronic antenna beam steering using ancillary receivers and related methods |
US20070042734A1 (en) | 2005-08-17 | 2007-02-22 | Samsung Electronics Co., Ltd. | Tuner and broadcasting signal receiver including the same |
US20070224948A1 (en) | 2005-12-12 | 2007-09-27 | Abraham Hartenstein | Wideband Antenna System |
KR20110051023A (en) | 2009-11-09 | 2011-05-17 | (주)전장하이텍 | Reception frequency variable type integration antenna for cars |
US20120295554A1 (en) | 2011-05-16 | 2012-11-22 | Paratek Microwave, Inc. | Method and apparatus for tuning a communication device |
US20170186415A1 (en) | 2015-12-23 | 2017-06-29 | Hyundai Motor Company | Audio system, vehicle having the same, and method for controlling the audio system |
US20180261913A1 (en) * | 2015-11-27 | 2018-09-13 | Harada Industry Co., Ltd. | Low-profile antenna device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08161655A (en) * | 1994-12-05 | 1996-06-21 | Maspro Denkoh Corp | Device for preventing theft |
-
2018
- 2018-09-19 KR KR1020180112063A patent/KR102553982B1/en active IP Right Grant
- 2018-11-30 US US16/206,632 patent/US10879599B2/en active Active
- 2018-12-07 EP EP18210996.7A patent/EP3627712A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5857145A (en) | 1996-08-02 | 1999-01-05 | Nec Corporation | Radio pager |
US6317027B1 (en) * | 1999-01-12 | 2001-11-13 | Randy Watkins | Auto-tunning scanning proximity reader |
US20060111056A1 (en) | 2004-11-19 | 2006-05-25 | Santanu Dutta | Electronic antenna beam steering using ancillary receivers and related methods |
US20070042734A1 (en) | 2005-08-17 | 2007-02-22 | Samsung Electronics Co., Ltd. | Tuner and broadcasting signal receiver including the same |
US20070224948A1 (en) | 2005-12-12 | 2007-09-27 | Abraham Hartenstein | Wideband Antenna System |
KR20110051023A (en) | 2009-11-09 | 2011-05-17 | (주)전장하이텍 | Reception frequency variable type integration antenna for cars |
US20120295554A1 (en) | 2011-05-16 | 2012-11-22 | Paratek Microwave, Inc. | Method and apparatus for tuning a communication device |
US20180261913A1 (en) * | 2015-11-27 | 2018-09-13 | Harada Industry Co., Ltd. | Low-profile antenna device |
US20170186415A1 (en) | 2015-12-23 | 2017-06-29 | Hyundai Motor Company | Audio system, vehicle having the same, and method for controlling the audio system |
Non-Patent Citations (1)
Title |
---|
European Search Report dated Jun. 28, 2019 from the corresponding European Application No. 18210996.7, 8 pages. |
Also Published As
Publication number | Publication date |
---|---|
KR102553982B1 (en) | 2023-07-11 |
US20200091593A1 (en) | 2020-03-19 |
EP3627712A1 (en) | 2020-03-25 |
KR20200032883A (en) | 2020-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8952854B2 (en) | Antenna spoiler and method of manufacture | |
US8294625B2 (en) | Antenna diversity system | |
JP2007142937A (en) | Vehicle-mounted receiving apparatus | |
US20200373654A1 (en) | Antenna apparatus | |
CN107171758B (en) | Vehicle communication system | |
US10848188B2 (en) | Vehicle, method of controlling the same, and antenna for vehicle | |
US6292232B1 (en) | Receiving apparatus | |
JP2003133982A (en) | Antenna system for multiple frequency bands | |
US10879599B2 (en) | Vehicle, control method thereof and antenna apparatus for vehicle | |
KR20190065520A (en) | Antenna apparatus and vehicle comprising the antenna apparatus | |
US4827275A (en) | Noise rejection antenna system for nonmetallic marine vessels | |
JPH08307297A (en) | On-vehicle antenna matching device | |
JPS5850833A (en) | Antenna amplifier of receiver for motorcar | |
JP2000151448A (en) | On-vehicle antenna system | |
JPS6221454B2 (en) | ||
US20240022274A1 (en) | Single-cable radio antenna system for a vehicle | |
US20240291139A1 (en) | Antenna module and wireless communication device having same | |
US11831066B2 (en) | Vehicle and antenna system of vehicle | |
JPH0611673Y2 (en) | Car receiver | |
JP4252430B2 (en) | Receiver | |
JP2008160226A (en) | Receiver | |
JPS6340501B2 (en) | ||
US9961375B2 (en) | Method of removing common mode noise, AVN system using the method, and vehicle including the AVN system | |
JP5714248B2 (en) | Tunable antenna device | |
JP5006084B2 (en) | Receiving apparatus and receiving method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
AS | Assignment |
Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, SANG HEUN;REEL/FRAME:047667/0992 Effective date: 20181120 Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, SANG HEUN;REEL/FRAME:047667/0992 Effective date: 20181120 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |